Connection for operating sewing-machines



(No Model.)-

L. W. MCCLUNG.

CONNECTION FOR OPERATING SEWING MACHINES.

No. 365,529, Patented June 28, 1887.

WITNESSES 23. "'83 2 22 .INVENTOR:

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section.

UNITED "STATE PATENT OFFICE.

LOIS WAITE MOCLUNG, OF PUEBLQ-COLORADO.

CONNECTION FOR OPERATING SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 365,529, dated June 28, 1887. Application filed April 1, 1887 Serial No. 233,312. (No model.)

To'aZZ. whom it may concern.-

Be it known that I, LOIS WAITE MoOLUNe, of Pueblo,.in the county of Pueblo and State of Colorado, have invented new and useful Improvements in Connections for Hand-Opcrating Attachments for Sewing-Machines, of which the following is a full, clear, andexact description;

This invention relates to connections that are applicable for use in securing that form of hand attachment for sewing-machines illustrated, described, and claimed. in my application Serial No. 212,086, filed August 28, 1886, to the frame and pitman of a sewing-machine, the object of the invention being to so form the connecting devices that the hand attachment may be secured to machines of almost any size.

Reference is to be had to the accompanying drawlngs, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views. 1

Figure 1 is a central vertical sectional view of a sewing-machine table and its runninggear, representing the .same as provided with my hand attachment and connectingdevices, the inner face of the'right-hand side of the machine being represented in the view, and a portion of the operatinglever being shown in Fig. 2 is a view in partial section of one of the connections employed to secure the vertical bar to the machine-frame, the view being taken upon a line corresponding approximately with the liue m 00 of Fig. 1. Fig. 3 is a view of the connection employed to clamp the link to the pitman of the machine, the pitman being shown in section. Fig. 4 is a side view of the pitman-clamp; and Fig. 5 is a sectional view of the clamp, the View being taken on line 3 y of Fig. 4.

Referring now briefly to the general construction, illustrated in the drawings above referred to, 10 represents the table; 11, the right-hand side of the machine-frame to which a driving-wheel, 12, that is carried by a balance-wheel, 13, is connected in the usual wellknown manner, the united wheels 12 and 13 being connected with a foot-treadle, 14, by a pitman, 15. l

The hand attachment represented in the first figure of the drawings consists of a lever,

' 20, within which the pitman 15 is arranged to fit, this yoke being pivotally connected to the lower end of the link 18 by means of a pivot pin or bolt, 21. Between the arms of the U- shaped yoke 20 there is fitted a follower, 22, said follower being formed with flanges 23, which overlap the edges of the arms of'the yoke. At points near the ends of the arms of the yoke I form vertical slots or recesses, in which there is fitted acentrally-apertured plate, 24,

said plate being formed with an enlarged head, 25, and with a threaded shank, 26, the arrangement being such that the plate may be inserted through the apertures formed in the arms of the U-yoke, and having been so inserted may be held in place by means of a nut, 27, that is arranged to engage the threaded shank 26.

The centrally-threaded aperture of the plate 2i is entered by a set-screw, 28, which may be turned forward to force the follower 22 hard against the pitman 15, so as to clamp the parts together, this arrangement being adopted in order that the yoke may be applied to'the pit man without disconnecting any of the parts of the machine proper, for it will be seen that by turning off the nut 27 the plate 24 may be removed, after which the follower'may be taken out. The yoke may then be placed so that its arms will embrace the pitman, after which the follower and the plate 2i are adjusted to place,and the parts clamped together, as above described. As in the case of my former application, the bar 17 is formed with vertical slots 2, and in the construction under consideration the bar is held to the main frame bya construction such as that illustrated in detail in Fig. 2.

The clamping attachment illustrated in Fig. 2 consists of a T-shaped bolt, 30, the shank of which is threaded inorder that it maybe engaged by the nuts 31 and 32. The head 33 of the bolt 30 is flanged and doubly apertured to receive the threaded arms of a U-bolt, 3l.

In applying the device the U -bolt is removed, the head of the bolt 30 is placed against the inner face of one of the cross-braces of the machine-frame, the U-bolt is passed about said cross-braces and its threaded arms passed through the apertures formed in the apertured head 33 of the bolt 30, the parts being clamped to place by nuts 35, that are brought into engagement with the arms of the bolt,as is clearly shown in Fig. 2, the out 31 is turned in toward the head of the bolt 30, and the projecting end of the boltshauk is passed through one of the apertures formed in the bar 17, the nut 31 is then turned up to bear against the bar 17, and the nut 32 is applied to clamp the parts together.

By means of such connecting devices as have been described I ani able to connect and properly adjust my hand attachment for use in connection with machines of most any size. An inspection of Fig. 1 Will show that the handle 40 of the lever 16 is formed with a threaded projection, 5, that is adapted to enter and engage the thread ofa socket, 6, that is formed in the free end of the lever 16, so that when the hand attachment is not in use the handle may be removed from all connection with the lever.

Having thus fully described my invention,I claim as new and desire to secure by Letters Patent- 1. The combination, with a sewing-machine attachment consisting of a bar, a lever pivotally connected thereto, a link carried by the lever, and a means for attaching the same to the machine-frame, of a clamp consisting of a yoke, 20, a follower, 22, a setscrew, and a means for holding the set-screw, substantially as described.

2. The combination, with an adjustablebar arranged for attachment to the frame of the machine, ofa lever pivotally connected to the bar, a link pivotally connected to the inner end of the lever, and a clamping attachment, substantially as described, whereby the link may be connected to the pitman, as and for the purpose stated, I

S. The combination, with a supporting-bar formed with vertical slots, of T-shaped bolts arranged to pass through said slots, nuts arranged to engage the threaded shanks of the T-shaped bolts, U-bolts arranged to encircle a portion of the machine-frame and to pass through apertures formed in the heads of the T-bolts,a lever pivotally connected to the bar, a link connected to theinner end of the lever, a U-shaped yoke pivotally connected to the lower end of the link and formed to receive the pitlnan of the machine, a follower mounted between the arms of the yoke, a bolt passed through apertures formed in the yoke'arms, a nut arranged to engage a threaded shank formed upon the bolt, and aset-screw carried by the bolt, substantially as described.

LOIS \VAITE MCCLUNG.

Witnesses:

J S. MQOLUNG, F. M. KEITH. 

